How to Say "anonymous letter" in Spanish
The Spanish word for “anonymous letter” is “anónimo” — B2 level.
English → SpanishB2
nounB2
a physical message sent without a signature

Examples
La policía analizó el anónimo en busca de huellas.
The police analyzed the anonymous letter for fingerprints.
Le enviaron un anónimo amenazante.
They sent him a threatening anonymous note.
No deberías creer lo que dice ese anónimo.
You shouldn't believe what that anonymous note says.
The Noun 'Anónimo'
When used as a noun, 'un anónimo' specifically refers to the piece of paper or the message itself, not the person who wrote it.
Confusing the letter with the person
Mistake: “El anónimo entró en la casa.”
Correction: El autor anónimo entró en la casa (or) Alguien anónimo entró.
Related Translations
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.